Re: [PATCH] Support for 'hostname' usage when the short name option (-s) is not available

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On Wed, Jul 10, 2024 at 08:34:00AM +0100, Neill Whillans wrote:
> There could be systems where the only 'hostname' options available are
> --help and --version, for example, when 'hostname' is provided by
> coreutils. This can result in output that corrupts the expected test
> output, leading to a test failure.

What kind of test env. do you use which doesn't have `hostname -s`?

> 
> This commit modifies all instances of 'hostname -s' usage, to check if
> the short name option is available, and if not, use only 'hostname'.
> 
> Signed-off-by: Neill Whillans <neill.whillans@xxxxxxxxxxxxxxx>
> ---
>  common/config  |  8 +++++++-
>  common/gcov    |  8 +++++++-
>  common/rc      |  9 ++++++++-
>  crash/xfscrash | 13 ++++++++++---
>  tools/auto-qa  |  8 +++++++-
>  tools/db-walk  |  7 ++++++-
>  tools/fs-walk  |  7 ++++++-
>  tools/interop  |  7 ++++++-
>  8 files changed, 57 insertions(+), 10 deletions(-)
> 
> diff --git a/common/config b/common/config
> index a1cd14de..9728a884 100644
> --- a/common/config
> +++ b/common/config
> @@ -48,7 +48,13 @@ export LC_ALL=C
>  
>  PATH=".:$PATH"
>  
> -export HOST=`hostname -s`
> +# If 'hostname -s' option not available, use 'hostname'
> +if ! hostname -s > /dev/null 2>&1; then
> +	export HOST=`hostname`

Maybe `hostname | cut -d. -f1` ?

> +else
> +	export HOST=`hostname -s`
> +fi

Or we just let HOST=$(hostname | cut -d. -f1), to reduce the steps.

> +
>  test `uname -s` = "Linux" || _fatal "fstests only supports Linux"
>  
>  export MODULAR=0               # using XFS as a module or not
> diff --git a/common/gcov b/common/gcov
> index b7e3ed5a..3e75d765 100644
> --- a/common/gcov
> +++ b/common/gcov
> @@ -45,9 +45,15 @@ _gcov_generate_report() {
>  	# Generate a detailed HTML report from the summary
>  	local gcov_start_time="$(date --date="${fstests_start_time:-now}")"
>  	local genhtml=()
> +  # If 'hostname -s' option not available, use 'hostname'
> +  if ! hostname -s > /dev/null 2>&1; then
> +	  export HOST=`hostname`
> +  else
> +	  export HOST=`hostname -s`
> +  fi

As we've gotten and exported HOST in common/config, can't we just use the $HOST
at here?

>  	if command -v genhtml > /dev/null; then
>  		genhtml+=(genhtml -o "${output_dir}/" "${output_dir}/gcov.report")
> -		genhtml+=(--title "fstests on $(hostname -s) @ ${gcov_start_time}" --legend)
> +		genhtml+=(--title "fstests on ${HOST} @ ${gcov_start_time}" --legend)
>  	fi
>  
>  	# Try to convert the HTML report summary as text for easier grepping if
> diff --git a/common/rc b/common/rc
> index 163041fe..34203c78 100644
> --- a/common/rc
> +++ b/common/rc
> @@ -3453,8 +3453,15 @@ _full_fstyp_details()
>  
>  _full_platform_details()
>  {
> +	# If 'hostname -s' option not available, use 'hostname'
> +	if ! hostname -s > /dev/null 2>&1; then
> +		export HOST=`hostname`
> +	else
> +		export HOST=`hostname -s`
> +	fi
> +

Same question as above

>       local os=`uname -s`
> -     local host=`hostname -s`
> +     local host=${HOST}
>       local kernel=`uname -rv`
>       local platform=`uname -m`
>       echo "$os/$platform $host $kernel"
> diff --git a/crash/xfscrash b/crash/xfscrash
> index 579b724d..cc88c6fc 100755
> --- a/crash/xfscrash
> +++ b/crash/xfscrash


Wow... I've forgotten that we have this program. It's created in 2001, I'm
wondering does anyone still use below scripts :)

Thanks,
Zorro

> @@ -22,8 +22,15 @@ AWK_PROG=gawk
>  # clear FS if >= this percent full at start of run. 100 is a good
>  # number - only used on corrupt test so far
>  FULL_LIMIT=80
> -  
> -case `hostname -s`
> +
> +# If 'hostname -s' option not available, use 'hostname'
> +if ! hostname -s > /dev/null 2>&1; then
> +	export HOST=`hostname`
> +else
> +	export HOST=`hostname -s`
> +fi
> +
> +case ${HOST}
>  in
>      leesa)
>          # mount test partition here
> @@ -54,7 +61,7 @@ in
>          STRESS_RANDOM=360
>  	;;
>      *)
> -        echo "!!! no configuration data for host `hostname -s`"
> +        echo "!!! no configuration data for host ${HOST}"
>          exit 1
>          ;;
>  esac
> diff --git a/tools/auto-qa b/tools/auto-qa
> index 1beb2835..431c1435 100755
> --- a/tools/auto-qa
> +++ b/tools/auto-qa
> @@ -59,7 +59,13 @@ _get_kernel_version()
>  # this should be constant
>  
>  ROOT="$HOME/qa"
> -HOST=`hostname -s`
> +# If 'hostname -s' option not available, use 'hostname'
> +if ! hostname -s > /dev/null 2>&1; then
> +	export HOST=`hostname`
> +else
> +	export HOST=`hostname -s`
> +fi
> +
>  if [ ! -z "$CVSROOT" ]; then
>      export WORKAREA="$ROOT/xfs-cmds"
>  else
> diff --git a/tools/db-walk b/tools/db-walk
> index e0992055..cb6fdc52 100755
> --- a/tools/db-walk
> +++ b/tools/db-walk
> @@ -162,7 +162,12 @@ $device=shift @ARGV;
>  die "can't read $device\n" unless (-r $device);
>  die "$device is not a block device\n" unless (-b _);
>  
> -chomp($HOST = `hostname -s`);
> +# If 'hostname -s' option not available, use 'hostname'
> +if(system('hostname -s > /dev/null 2>&1')){
> +	chomp($HOST = `hostname`);
> +} else {
> +	chomp($HOST = `hostname -s`);
> +}
>  
>  print "*** db-walk host $HOST device $device\n";
>  
> diff --git a/tools/fs-walk b/tools/fs-walk
> index 918e1ad6..4ff713a4 100755
> --- a/tools/fs-walk
> +++ b/tools/fs-walk
> @@ -56,7 +56,12 @@ $dir=shift @ARGV;
>  die "can't read $dir\n" unless (-r $dir);
>  die "$dir is not a directory\n" unless (-d _);
>  
> -chomp($HOST = `hostname -s`);
> +# If 'hostname -s' option not available, use 'hostname'
> +if(system('hostname -s > /dev/null 2>&1')){
> +	chomp($HOST = `hostname`);
> +} else {
> +	chomp($HOST = `hostname -s`);
> +}
>  
>  print "*** fs-walk host $HOST dir $dir\n";
>  
> diff --git a/tools/interop b/tools/interop
> index dc1652c2..db73dfba 100755
> --- a/tools/interop
> +++ b/tools/interop
> @@ -63,7 +63,12 @@ sub mount($)
>      run("mount -t xfs $ops $SCRATCH_DEV $SCRATCH_MNT");
>  }
>  
> -chomp($HOST=`hostname -s`);
> +# If 'hostname -s' option not available, use 'hostname'
> +if(system('hostname -s > /dev/null 2>&1')){
> +	chomp($HOST = `hostname`);
> +} else {
> +	chomp($HOST = `hostname -s`);
> +}
>  
>  die "usage: $ARGV0 <operation> [parameters]\n" unless (scalar(@ARGV));
>  print "*** $HOST: Interop started\n";
> -- 
> 2.43.0
> 





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